Acetylene-gas generator.



T. M. NUNN.

AGETYLBNE GAS GENERATOR.

APPLICATION IILED FEB.25, 1913.

Patented June 17, 1913.

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THOMAS MARTIN NUNN, OF MARTIN'SVILLE, VIRGINIA.

AGETYLENE-GAS GENERATOR.

Specification of Letters Patent.

Patented June 17, 1913.

Application filed February 25, 1913. Serial No. 750,599.

To all whom it may concern:

Be it known that I, THOMAS M. NUNN, a citizen of the United States, and resident of Martinsville, county of Henry, and State of Virginia, have invented certain new and useful Improvements in Acetylene-Gas Generators, of which the following is a full and clear specification, reference being had to the accompanying drawings, in which-' Figure 1 is a vertical sectional view show ing the gas bell down and the valves open, and Fig. 2 is a similar view taken at right angles to the plane on which Fig. 1 is taken.

The object of this invention is primarily to provide a simple and reliable valve for the carbid hopper or chamber whereby the exhaustion of the gas from the bell and the consequent lowering of the bell will automatically open the carbid valve and at the same time open a supplemental valve below the carbid valve, this lower valve being for the purpose of closing the discharge opening of the carbid chamber and thus preventing water or moisture getting up into the carbid chamber and thus partly disintegrate the carbid.

Referring to the drawings by reference characters, a designates the main or sealing tank, 5 the usual inverted bell having its lower edge working within the sealing liquid in the tank a in the usual manner, and 0 a gas generating tank supported within the main tank.

Supported on the tank 0 is a carbid hopper 9 whose bottom is funnel shaped, the inclined wall of the funnel leading to a carbid discharge opening it. Depending from the top wall of the carbid chamber is a tube 2' which opens at its lower end into the carbid chamber near the discharge opening it and opens at its upper end into the gas space of the bell. Slidably confined in the tube 2' is a weighted tube j and passing down through this tube is a rod 7c carrying at its lower end a spherical or other shaped Valve Z, this valve Z being suspended by said rod 70 at a point below the discharge opening it of the hopper. The valve Z is suspended by means of two upwardly diverging rods m, and the weighted tubular valve 9' is suspended by a pair of similarly arranged rods a. These rods m and n are pivotally connected at their upper ends, at points above the top of the carbid hopper to a pair of disks 0 journaled upon a shaft p mounted upon the top of the carbid hopper, each of said disks being provided with a tangential arm 9 whose outer, upper end is provided with a roller 7'.

It will be observed that the arms carried by the disks project upwardly and outwardly away from each other so that when the bell falls a predetermined distance these arms will be simultaneously depressed and their connected disks rotated simultaneously in opposite directions. When this action takes place it will be observed that the arrangement of rods connected to the disk lowers the gas valve away from the discharge opening and positively raises the carbid valve and thus permits carbid to fall into the generating tank. lVhen the bell ascends the weighted carbid valve falls to its seat and at the same time raises the arms to normal position and pulls the gas valve to its seat. It will be observed that the carbid valve is sufliciently heavy to perform this operation. The diverging arrangement of rods for each valve and the use of a pair of disks insures direct vertical movement of the valves, thereby preventing binding in their respective movements.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In an acetylene gas generator, the combination of a tank and a bell, a generating tank therein, a carbid holder above this latter tank and provided with a discharge opening leading into said tank, a depending tube in the carbid chamber having its upper end in communication with the bell, a weighted valve mounted in said tube and consisting of a tube having a passage extending through it from end to end, 'a gas valve supported below said discharge opening of the carbid chamber, and means whereby the fall of the bell opens both said valves and whereby the weight of the tubular valve closes itself as well as the gas valve.

2. In an acetylene gas generator, the combination of a tank and a bell, a generating tank therein, a carbid holder above this latter tank provided with a discharge opening leading into said tank, a weighted tubular valve open from end to end and means on.

the carbid chamber for guiding the valve vertically, a gas valve supported below the discharge opening of the carbid chamber, and means whereby the fall of the bell opens both said valves and whereby the weight of the tubular valve not only closes itself but also closes the gas valve, said means embodying oscillating members mounted on the carbid chamber and connected to the respective valves by means of depending rods.

3. In an acetylene gas generator, the combination of a tank and a bell, a generating tank therein, a carbid holder above this latter tank provided with a discharge opening leading into said tank, a Weighted tubular valve open from end to end and means on the carbid chamber for guiding the valve vertically, a gas valve supported below the discharge opening of the carbid chamber, and means whereby the fall of the bell opens both said valves and whereby the weight of the tubular valve not only closes itself but also closes the gas valve, said means consisting of a pair of oppositely extending arms oscillatingly mounted on the carbid chamber and each provided with a disk, a pair 01": depending rods connected to each of said valves, the upper ends of each pair of rods being pivotally connected to opposite disks at opposite sides of the point of oscillation. In testimony whereof I hereunto affix my signature in the presence of two witnesses.

THOMAS MARTIN NUNN. Witnesses:

JAs. A. STULTZ, J. H. MINTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, I). C. 

